Sole-pressing machine



c. c; BLAKE. SOLE PRESSNG MACHINE. APPLICATION FILED AUGLB. L9.l6-RENEWED DEC. I5. 1921.

- Patentedfiept. 5,- 1922.

5 SHEETS-SHEET l- C. C. BLAKE.

SOLE PRESSING MACHINE. APPLICATION man nus a. 19164. RENEWED 020. I5.l9.2h.

Patentedseptm 5, 1922.

5 SHEETS-SHEET 2 fzzzzimar Wymmmw c. c. BLAKE. SOLE PRESSING MACHINE-APPLICATI ON FILED AUGB. 19l6- RENEWED DEC- 15. l'92t.

1,427,940; PatentedSept. 5, 1922.

5' SHEETS-SHEET a.

[72220721212 .v 2n n 0,, c. BLAKE. SOLEPRESSING MACHlNE APPLICATION HLEDAUG 8. 1916. RENEWED DEC. 15. 192i.

PatentedSept; 5, 1922.

SISHEETS-LSHEET 5.

fnwmehr AJk wy Patented Sept. 5, 1922.

CHARLES c. ethane)? 's'eooitmns, MASSACHUSETTS.

sonn-rnisssme MACHINE.

Application filed August s, 1916, Serial-No. 113,725. Renewed December15, 1921; Serial No. 522,724.

blank soles,- to lay o-utsoles preparatory to the rough roundingoperation" and to level thesh'oes after the 'stitchmg operation;

The object of the present inventionis to produce a sole pressingmachineof simply lied and improved-constructionand having an improvedmode of operation whereby'the sole pressing operation may l e-performedin a reliable manner Without re uiring the ex-- ercise of skill uponthepart 0 an operative.

To the accomplishment of thisobject the features of the presentinvention consist in I "is laid by the machine of the drawings, is

certain devices,- combinations and arrangements of parts fully set forthhereinafter, the advantages of which will be readily understood by thoseskilled in the art.

The various features of the present invention will be readily understoodfrom an inspection' of the accompanying drawlngs illustrating the bestform of the nvention at present known to the inventor, in which,

Figure 1 is a front elevation of the machine;

Fig. 2 is a left side 'GlQWltlOIL;

Fig. 3 is a left side sectional elevation;

Fig. 4; is a detail in right side elevation;

Fig. 5 is a detail-in left'side GlGVELtIPII Fig. 6 is a front elevationof" the frict on clutch;

F ig. 7 is a sectional'elevation-on the line 'T- 7,Fig.6;and I I I F ig.8 is a sectional plan on the line 8-8, Fig.- 6. j p I The machineillustratedin' the drawings is a twin machine havingtwo sets ofco-operating sole pressing members which are operated alternately insuch ,manner that when one set is in a position of pressure the otherset is in a position ofclearance convenient for the removal andinsertion of the work The machine is provided with a train of mechanismand a source of power for operating the train of mechanism to elevatethe soleinto a position of pressure. Upon the attainment of apredetermined pressure a of pressure.

Each of the sole pressing forms comprises a rectangular box 1 massofshotor steel balls 2 which are sup ported by a canvas cover 3. The edges ofthecover are clamped between a flange 4: onthe box and a rectangularframe 5 securedtothe flange. In order that the sole pressing forms maytip to adapt themselves (Fig. 1) containing a nane to the diiferentslopes on the different shoes operated upon the forms are each provided:with pair oftrunnion's 6 (Figs. 1 and 2) journaled in plates 7securedto the upper endsof stationary rods 8; The rods 8, of which thereare six, are bolted to a supportinn: frame9.

The welt-ed shoe, upon which the outsole a table 12 which is providedwith guides 13 for guiding the runners into operative position and witha stop for limiting the inward movement of the runners.

The tables 12 are mounted to reciprocate upon the rods 8. To this endthe tables are secured, respectively, to the upper ends of rods 14 and15 which slide vertically in bosses formed inthe frame 9 and in an aux-'iliary frame 16 carried by the rods 8 (Fig.

1). The'lower ends of the rods 1i and 15 are arranged upon oppositesides of a horizontal shaft 17 (Fig. 2) journaled in the frame 16. Thisshaft carries a gear 18 (F ig. 1) which-meshes with a rack 19 (Fig.

2)f011116d on thelower end of the rod 14:.

The shaft 17 also carries a gear 20 (Fig. 1) which meshes with a rack 21(Fig. 2) formed onthe lower end of the rod15.

During the operation of the machine the shaft 17 is first rotated inon'edirection and then in the other direction to bring one of the shoesinto a positionof pressure and to return the othersho'e to aposition ofclearance. As shown inFig. 1 the machine is at rest with one shoe in aposition of. clearance. When the machine is restarted the shoe to beoperated upon starts from a position of clearance and moves into aposition of pics sure while the shoe which has been operated uponreturns to a position of clearance. The shoe to be operated upon movesat a constant rate of speed into engagement with the sole pressingform.When the shoe first engages the form the shot or steel balls :2 rollover one another inside the box as they adjust themselves to the sizeand shape of the shoe. When their limit adaptability has been reachedthe balls present substantially a solid metallic surface to theadvancing movement of the shoe. its the balls will have more opportunityto lod 'e around the sides ot the box when conforming to the curvatureof a small shoe than when con- :lorming;- to the curvature of a largeshoe, it will heapparent that a small shoe will sink a greater distanceinto the form than a large shoe. Consequently the heightwhich it will benecessary to elevate the shoe in order to exert the desired pressurethereon will var withthe different sit res ofshoes. Notwithstanding thisfact it is highly desirable that the same ellective sole laying p beexerted upon all shoes irrespec their sizes v In order to permit theelevation of the shoe through an indeterminate distance and to stop itupon the atta nment of a predetermined pressure upon the work the shaft17 is provided with a worm wheel (Figs. 1 and 3) which meshes with aworm 2S I? and secured to a shaft 24; journaled in hearings formed inbrackets 25 supported from the base 9. The shaft 24; is free to moreendwise in its bearings. Normally this endwise movement under the thrusto't' the worm is resisted b i weiehts 526 and 2 .l 4

central position. To this end the weight 26 carried upon one end of anarm 1. 2 and which is connected at its other end to an arm projectingfrom a rock shatt 3-0 b) iournaled in the trout bracket 25. ihe rockshaft 30 carries a vertical arm 3] arranged to normally engage one endof the shaft 94. carried upon one end oil an arm 32 (Figs. 8 and 4t)which is pivoted at on a bracket supported from the base 9. short link3-l connects the pivoted arm 32 to an arm 35 connected to a short arm 36projectingfrom a rock shaft 37 (Fins. S and L) journaled in the rear bralret The rock shaft 3? carries a vertical arm 38 arranged to engage theend of the shaft 24 opposite the end ened by the arm 31. The weights 26and are adjustable on their arms and are arranged side by side at therear of the machine so that they will be convenient for the operativewho may desire to vary the position of the weights on their arms Whilthe machine is 1n operation.

4n (Fig.

The. weight 27 When the shoe, for instance. the shoe on the rod let, inits advancing movement engages the form the balls therein quickly adaptthemselves to the curvature of the sole and soon present a solid trontto the advancement oi" the shoe. After the seated on the shoe thecontinued advance of the shoe develops pressure which is transmittedback through the worm wheel to the worm 23. l l hen this pressureexceeds the power of the weight 26 the worm wheel stops and the" worm 23instead of driving the worm whee 22, acts'as a rack on the stationaryorm wheel and carries the shaft 2' to the li gl'll (Fig. 3) intoengagement with the arm 31 thus rocking the shaft 30. Ad vantage of thisrocking of the shaft 30 is taken to disconnect the train of mechanismfor elevating the shoe from its source of power. It will be apparentthat the source of power is disconnected tromthe train of mechanism.subsequently to the stopping of the solo in its position o'l pressureand that the worm wheel. and vorm operate as an irreversible mechanismto cause a dwell of the sole in its Position of pressure.

The shatt 94: is driven in opposite directions to alternately elevatethe rods 1e and 15 and thus bring: thewo'rk supported thereby into aposition oi p essure. To this end the shaft A carries bearinu' sleeves39 and upon which belt pulleys 4H and loosely mounted, respectively. Thepulleys 4:1. and 42 are driven by a belt 413, p ssing over the pulleys.which is driven by a pulley 4.4-

l) on a driving shaft (it an electric motor 46. T he belt 43 leaves thepulley 4 in the direction of the arrow (Fifi. 1). passes beneath anidler 47. over thepulley ll, l and 3% around a horizontal idler l8(Fiog. '1) over the pulley beneath idler 4.9 (Fig. 3) and thenretroruing to the pulley 44:. To vary the tension of the belt 4:? theidler 48 (Fig. 1) is adjiistablymounted in a bracket 50 on the base 9;

in order to clut h the shaft 24- to the pulley lland thus drive theshaft in a direc tion to elevate the rod l4 the pulley is provided witha circularhuh 5i (Figs. 6., 7 and 8) having a peripheral shoulder theinternalface of which comprises one member or": a trictionclutch. Theother member' of the friction clutchcomprises a pair of spring; arms5 ladapted to be jammed againstthe internal face 53 and be rotated therebyduring; the rotation of the pulley 41:]The spring arms are secured byscrews 55 to the opposite arms 56 of a spider 57 loosely mounted on thebearing sleeve 39. As shown in Fig. 8 the supporting ends of the arms 56are rounded so that the spring arms 54: may beslig'htly rocked thereonto press the ends of the spring arms 54. firmly against the internalrate 53. The spring form is na /s40 3 arms 54 are normally held outof-engagement with'the internal face 53 and in engageme'nt with a pairof bridges 58, which loosely embrace the spring arms 54, by a pair ofleaf springs 59 having their ends secured to the arms '56 and engagedwith the spring arms, respectively. The spider 57 is alsop'rovided witha pair of arms 60 the free ends of which are slotted to embrace a pairof rolls 61 mounted on a collar 62 secured by a pin 68 to the shaft 24.

In order to rock the spring arms 54 on the rounded ends of thesupporting arms 56 of the spider 57 and thus jam the arms against theface 53the collar 62 loosely receives a pair of pins 64 (Fig. 8)projecting from a collar 65 loosely mounted on the shaft 24. The treeends of the pins 64 en gage the ends of the spring arms54 opposite theends adjacent the internal race lVith this construction when the collar65 is moved towards the collar 62 the pins 64 engage the ends of thespring arms 54 and rock the opposite ends of the spring arms intobinding engagement with the internal face 53 thus clutching the shaft 24to'the pulley 41.

In order to shift the collar 65 on. the shaft 24 to engage the pins 64with the spring arms 54 the'collar "65 is slotted tourec'eive a pair ofrolls 66 (Fig. 3) mounted in the bifurcated end of an arm 67 projectingfrom a rock shaft 68 journaled in the front bracket 25. A second arm 69(Fig. 5) depending from the rock shaft 68.. has a yoke 70 formed thereonthe arms of which loosely receive a threaded rod 71 one end of which isconnected to a block 72 and the other'en'd of which is provided with anut 73 for holding the rod in place. Between the arms of the yoke 70 therod 71 carries a nut 74 having a series of holes formed therein whichmay be engaged by a suitable tool for adjusting the rod 71 in the arm69. The block 72 -is pivoted to one link of a toggle 75 the other linkof which pivoted at 76 to the base 9. The links of the toggle arestraightened to rock the shaft 68 and thus bring the pins 64 intoengagement with the spring arms 54 by a treadle 7'? pivoted at 78 on thebase '9. The treadle 77 carries a lug 79 (Fig. l) which looselyreceives't'he shank of a headed bolt 80 pivoted to one of the links ofthe toggle 75. When the treadle is actuated the lug 79 engages the headon the bolt 80 and thus depresses the toggle links and makes the toggle.The toggle links are held locked in their made position by a spring 81(Fig. one end of which is connected to a pin 82 onth'e base 9 and theother end of which is connected to the block 72.

With this construction depression ofthe treadle 77 throws in thefriction clutch to rotate the shaft 24 in a direction to elevate the rod'14 and thus bring the worksupported thereby into a position'otpressure.When the pressure "exceeds the power oi the weight 26 the worm wheel 23stops and the worm 22 moves endwise and carries the 70 shaft 24 intoengagement with the arm 31 which rocks the shaft 30 clockwise thuselevating the arm and the weight 26. The arm 28 is connected to one endof a link 83 (Fig. 5) the other end of which is slotted 75 to embracethe floating pin 84 of the toggle 75. When the toggle is made the pin 84is transferred to the bottom of the slot in the link 83. hen the arm 28is lifted by the rocking of the shaft 30' under the overload 80 the link83 elevates the pin 84 thus breaking the toggle. Upon the breaking'ofthe toggle the spring 81 rocks the shaft 68 in a direction to withdrawthe pins 64 from the spring arms 54. The leaf springs 59 then operate 85to withdrawthe spring arms54 from clutching engagement with the internalface 53. g It will be apparent to those skilled in the art that whilethe rod 14 is elevated through the driving of the worm wheel23 by theworm 22 the rodf14 may not be depressed through the driving of the worm22 by the worm wheel 23. Consequently the worm wheel and worm constitutean irreversible mechanism for locking the work in its position ofpressure. As thecentri'fugal force of the spring arms 54 is slight nobrakes are needed for preventing the over travel of the shaft 24 whenthe friction clutch is thrown out of operation. 6 I I00 ilhe shaft 24is'rotated in the reverse direction to elevate the rod 15 and depressthe were to bring the shoes into the position of Figure lby the pulley4-2 whichis clutched tothe shaft 24 "by a friction clutch 85 ig. 3)having the same construction and mode of operation the friction clutchhereinbeitore described for clutching the pulley 41 to the shaft 24.'The clutch 85 is thrown into operation by a pin collar 86 (Figs. 3 and4) corresponding to the collar 65. loosely mounted on the shaft 24. Thecollar 86 is slotted to receive'a aair of rolls 8?, m'ountec in thebifurcated end of an arm 88 projecting from a rock shaft 89 journaled inthe rear bracket A second arm 90, depending from the rock shaft 89, has"a yoke 91 formed thereon the arms of which loosely receive athiead'ed'bmt one end or? which is connected to a block 98 and the otherend of which is provided with a nut 94- for holding the rod in place.Between the arms of the yoke 91. the rod 92 carries a: nut 95 having aseries of holes formed therein which may be or god by a siiitable toolfor adjusting the rod 92 in the arm 90. The block 93 is pivoted to onelink of toggle'96 the other link 7 of which is pivoted at 97 to the base9. The links'ot the toggle 96 are straightened to rock the shaft 89 andthus throw in 1 3 0 the friction clutch 85 by a treadle 98 pivoted at 99on the base 9. The treadle 98 carries a lug 100 1) which looselyreceives the shank of a headed bolt 101 pivoted to one of the links ofthe toggle 90. Vi hen the treadle is depressed the lug 1.00 engages thehead on the belt 101 and thus depresses the links and makes the toggle96. The toggle links are held in their made position by a spring 102igs. 3 and 4-) one end of which is connected to pin 1.03 on the base 9and the other end of which is connected to the block 93.

The toggle 96 is broken when the pressure developed by the contact ofthe shoe carried by the rod 15 with the sole pressing form co-operatingtherewith exceeds the power of the weight 27 at which time the worm 9-2travels to the right 4).. The shaft 21, having moved endwise, rocks theshaft 37 clockwise through the arm 38 thus elevating the arm and theweight 27. lVhen this occurs a link 10 1:, having one end connected tothe arm 35 and having its other end slotted to embrace the floatingpivot pin 10:) of the toggle 96, elevates the toggle links and breaksthe toggle 96. The spring 102 thereupon acts to rock the shaft 89 in adirection to disengage the members of the friction clutch 85.

It is desirable that in addition to the automatic mechanism describedfor stopping the machine a manually operated stopping mechanism beprovided. To this end the frame 16 carries a pair of brackets 106 whichsupports a horizontal rock shaft 107 provided with an operating handle108. One end of the shaft 107 is provided with an arm 109 (Fig. 2) whichis connected to a link 110, the lower end of which is slotted to embracea pin 111 (Figs. 2 and carried by one of the links of the toggle 75. The other end of the rock shaft 107 is provided with an arm 112 (Fig. 3)which is connected to a link 113 (Figs. 1 and 1) the lower end of whichis slotted to embrace a pin 1141 carried by one of the links of thetoggle 96. With this construction depression of the handle 108 willelevate the links 110 and 113. Whichever toggle is made willconsequently be broken by the cont-act of the slotted end of the linkswith one of the pins 111 and 114: on the toggle.

In order to prevent the simultaneous making of the toggles 7 5 and 96the machine is provided with a floating beam 115 (Fig. 1) centrallypivoted. at 11.6 (Figs. 1. and 41) on the base The ends of the beam 115are arranged to be engaged by pins 117 (Fig. and 118 t) on. the toggles75 and 96, respectively. Then one of the toggles is made, for instancethe toggle 75. the left hand end of the beam is depressed throughcontact with the pin 117. The other end of the beam is elevated so thatif the treadle 98 is depressed to make the toggle 96 the right hand endof the beam 115 will be depressed thus elevating the other end of thebeam 115 and breaking the toggle 7 5 through contact of the beam 115with the pin 117.

In order to prevent the racks 19 and 21 from running out of mesh withthe gears 18 and 20' in the event that the machine is thrown intooperation with no work on the.

tables 12 the lower ends of the rods 14 and are provided with collars119 and 120, respectively. (Fig. 1). One of these collars egas the frame16, when the machine is thrown into operation without work on thetal'iles and develops the overload for moving the shaft 24- endwise.This endwise movement of the shaft 241- stops the machine in the mannerhereinbefore described.

ll hile the invention has been illustrated described in connection witha machine for laying the outsole upon a welted shoe it will be apparentto those skilled in the art that certain features of the invention areapplicable to machines for molding blank soles and for levelling shoesafter the stitching operation.

will be apparent to those skilled in this class of machines that changesmay be made in the I details of structure the described and illustratedembodiment thereof being intended as an exploitation of its underlyingessentials the features whereof will be definitely stated in their truescope in the claims hereto appended.

li hat is claimed as new, is zi 1. it sole pressing machine, havlng incombination. (to-operating sole pressmg members; a source of power, anda train of mechanism connecting one of said pressing members and saidsource of power, having a definite limit of extent of movement, formoving one of said members toward the other including a worm wheeloperating to stop upon the attainment of a predetermined pressure uponthe work and devices operated by the endwise movement of the worm underan overload for disconnecting the train of mechanism from its source ofpower.

2. A sole pressing machine, having, in combination. co-operating solepressing members; mechanism, including a worm wheel for moving one ofsaid members toward the other; a longitudinally movable shaft; a wormcarried thereby and engaged with the worm wheel; a source of power forthe shaft; and devices operated by the endwise movement of the shaftunder an overload for disconnecting the shaft from its source of power.

A. sole presslng machine, having, in combinatmn, co-operatmg solepressing members; a source of power; a train of mechanism connecting oneof said pressing members and said source of power for moving one of saidmembers toward the other; manually operated. means for connecting thetrain of mechanism and its source of power, and independent devicesoperated automatically and manually, respectively, for disconnecting thetrain of mechanism from its source of power.

4. A sole pressing machine, having, in combination, co-operating solepressing members; a source of power; a train of mechanism connecting oneof said pressing members and said source of power for moving one of saidmembers toward the other; manually operated means for connecting thetrain of mechanism comprising a toggle and a treadle for making thetoggle, and independent devices operated automatically and manually,respectively, for breaking the toggle to disconnect the train ofmechanism from its source of power.

5. A sole pressing machine, having, in combination, co-operating solepressing forms, means having a definite limit of eX tent of movement formoving one of said forms towards the other, actuating mechanismtherefor, devices for throwing out the actuating mechanism when saidmeans reaches its limit of extent of movement, and devices for throwingout the actuating mechanism short of its limit of extent of movementafter a predetermined amount of pressure has been placed upon the work,substantially as described.

6. A sole pressing machine, having, in combination, a sole pressingform, a support for the sole of a shoe, mechanism including a worm wheelfor relatively actuating the support and form to exert pressure upon thesole, a shaft, a worm carried thereby and engaged with the worm wheel,mechanism for actuating the shaft, a device adjustable during theoperation of the machine for resisting the end thrust of the worm, anddevices operated by the endwise movement of the worm under an overloadfor throwing out the shaft actuating mechanism, substantially asdescribed.

7. A sole pressing machine, having, in combination, a driving shaft, adriven shaft, means for driving the driven shaft first in one directionand then in the other direction, a worm carried by the driven shaft, athird shaft, a worm wheel carried thereby and engaged with the worm, apair a wornrwhecl for relatively actuating the support and form to exertpressure upon the solo, a longitudinally movable shaft, a worm carriedthereby and engaged with the worm wheel, a source of power for actuatingthe shaft, a clutch for clutching the source of power to the shaft, anddevices operate-cl.

by the endwise movement of the shaft under an overload for throwing outthe clutch,

substantially as described.

9. A sole pressing machine, having, in combination, a sole pressingform, a support for the sole of a shoe, mechanism including a worm wheelfor relatively actuating the support and form to exert pressure upon thesole, a longitudinally movable shaft, a worm carried thereby and engagedwith the worm wheel, a source of power for actuating theshaft, a clutchfor clutching the source of power to the shaft, means for throwing inthe clutch comprising a toggle and a treadle for making the toggle, anddevices operated by the endwise movement of the shaft under an overloadfor breaking the toggle to throw out the clutch, substantially asdescribed.

10. A sole pressing machine, having, in combination, a sole pressingform, a support for the sole of a shoe, means having a definite limit ofextent of movement for moving one of said. members towards the other,and devices for interrupting the advance of the moving member short ofits limit of extent of movement after a predetermined amount of pressurehas been placed upon the work, including an irreversible mechanism forpreventing retrograde movement of the moving member when the advance ofthe moving member is interrupted with the sole under pressure,substantially as described.

CHARLES C. BLAKE.

